Signaling unit for wireless telegraphy



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-SIGNAL |NG UNIT FOR WIRELESS TELEGRAPHY. APPLICIAIION'FILED MAY 11, 1922.

Patented Aug. 1, 1922.

S. G. FROST.

SIGNALING UNIT FOR WIRELESS TELEGRAPHY.

' APPLICATION FILED MAY 11, I922.

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APPLICATION FILED MAY 11. 1922.

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APPLICATION FILED MAY II, I922.

' Patented Aug. 1, 1922.

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harem SYDNEY GEORGE FROST, OF TWICKENHAM, ENGLAND.

SIGNALING UNIT FOR WIRELESS v'1ELEGRAIPHY.

To all whom it may concern.

Be it known that I, SYDNEY Gnome FRos'r, of Twickenham, in the county of Middlesex, England, a subject of the King of Great Britain and Ireland, have invented certain new and useful Improvements in Signaling Units for \Vireless Telegraphv (for which I have filed application in England, November 15, 1920, No. 175.720), of which the following is a specification.

This invention relates to an emergency high tension generator for wireless signaling purposes and particularly suitable for use on aircraft or the like.

The invention comprises the combination, in a magneto electric generator, of an armature rotatable from a driving shaft through magnifying gearing and adapted to provide direct current potential for operating a high or low tension wireless transmitter in conjunction with a detachable or changeable rotatable signal switch for automatic transmission of Morse signals of audible frequency. The signal switch is driven from the driving shaft direct or through reduction gearing, and the whole forms a single unit.

The invention is illustrated in the accompanying drawings, in Which-- Fig.1 is a side elevation of one form of construction Fig. 2 is an end elevation, parts being Fig. 3 is a plan, parts being omitted;

Figs. 4 and 5 are an elevation and an end view of a serrated switch;

Fig. 6 is a sectional elevation of a modification;

Fig. 7 is a sectional elevation of another modification Figs. 8 and 9 are end elevations; and

Fig. 10 is a circuit diagram.

Like reference letters indicate like parts where repeated in the drawings.

As shown, the generator comprises a per manent magnet or magnets 7, an armature 8, the spindle of which is rotated through speed gearing, 9, and a handle 10, on a driving spindle 11. In Fig. 1 the driving spindle and the armature spindle are mount ed in antifriction bearings 12, and in Fig. 7, the driving spindle turns in plain hearings, in brackets '13.

14 is a multisection commutator on the armature spindle in series with the armature winding, and l5, 16 are brushes.

Specification of Letters Patent.

Patented Aug, 1, 1922. 1922. Serial No. 560,007. x i

17'is a serrated rotary switch which, in Fig. 1 is mounted on the driving spindle 11, and in Fig. 7 is mounted on a countershaft 29, extending from a boss plate 30, connected by screws 31, to a gear wheel 32, driven at reduced speed by a pinion 33, on the driving spindle. The switch 17, has a plain conductlng portion 18. 19, 20 are brushes.

It will be seen that the serrated switch 17 is fitted with conductive segments 21, for transmitting an emergency call signal, and

is housed within the permanent magnet,

Fig. 1, or between the magnetsand beneath the condenser 34, Fig. 8. The signal switch 17, may be readily removed and replaced by removing the nut 22, (Fig. 1). Or, as shown in Figs. 6 and 7, the signal switch may be constructed to push it on to a square portion in Fig. 10 with one brush 15, of the arma-' ture commutator 14, connected to one brush 20, of the signal switch 17, and with the other brushes 16, 19, connected to the respective terminals of the external circuit. The signaling apparatus is then ready to'be operated by an unskilled person.

()ne of the brushes 15, of the armature commutator may be connected to the external circuit through a two-way switch 49, and

the terminals of the signal switch may be short-circuited or put out of circuit thereby so that the signaling apparatus may be used by a skilled person by operating a key 47, to transmit any desire'dsignal. When the switch 49 isnot connected to the brush 15,

and is on stud 50, the generator automatically transmits a predetermined emergency signal, or a succession of such signals, by wave telegraphy by rotating the driving spindle 11 by means of the handle 10, thus also rotating the armature 8 and signal switch 17. When the switch 49, is connected to the bruslr 15, and is on stud 51, the sig-.

nal switch is short circuited and signals may be sent; by a skilled operator operating a Morse key. 47, in the external circuit. \Vhen the signal switch-is short circuited or removed the generator may be used for sup lying directcurrent to a wireless receiver. What I claim and desire to secure by Letters Patent is 5 1-. ,A signaling unit for wireless telegraphy or the like comprising in combination an electric generator, a rotor therein, means for rotating the rotor, connections for associating the rotor in a transmitting circuit, and means mechanically controlled by said, first means and operating in conjunction with the rotor in said connections for transmit- ,ting telegraphic signals. I 2. A portable signaling set for wireless 15 telegraphy comprising in combination a magneto-electric generator, a rotor therein,

a rotatable signaling device, means thereon for transmitting a predetermined signal by the rotation of the device, electric connections from the rotorto the signaling device and from the rotor and the signaling device.

', switch to be rotated in conjunction with the transmitting circuit connected to the armature, a rotary switch and a Morse key connected to said circuit, means for causing the rotation ofthe armature to' rotate the rotary switch, means on the rotary switch for transmitting a predetermined signal by the rotation of the switch, and means enabling either the 'rotary switch to transmit the predetermined signal, or the said rotary switch to be cut out and the Morse key to be used instead to transmit any desired signal.

5. In a signaling unit for wireless telegraphy, the combination with a magneto electric generator, of a rotatable armature therein, a rotary switch in circuit with the armature, a second transmitting circuit connected to the armature, a telegraphic key in the said second circuit, meansfor optionally employing either the rotary switch or the telegraphic key to produce wave signals, and means for rotating the armature and switch.

name to this specification.

SYDNEY GEORGE raosr.

In testimony whereof I have signed my. 

